package com.leyou.item.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.leyou.item.entity.Sku;
import org.apache.ibatis.annotations.Update;

import java.util.Map;

/**
 * @author 虎哥
 */
public interface SkuMapper extends BaseMapper<Sku> {

    @Update("update tb_sku set stock = stock -#{num},sold=sold + #{num} where id = #{id}")
    int updateStock(Map<String, Object> param); // {"num":2,"id":100};
}